Non Random Feature Theme

This is my first post, sorry if there is already a topic covering this. It's hard when I don't even know what to search for, but I have been searching for hours on end.

I really like the feature theme, but I don't want a random post. And I'm fully aware that it's possible to make it just do one post.. somehow. But I am just exhausted from digging through forums and search engines for hours. So here's my question:

I found how to control the "Who's behind 'blog title'?" section of the landing page, but the section that says "blog title blog", above that, is where I'm confused. How do I insert a picture there and a heading? Or a slideshow? I don't know where to access that, and if someone could help me out I would be so grateful. Thanks guys.